Quoted from CubeSnake:Peanut butter. Apply a bunch of it making sure you cover the entire area you need removed. Leave it on for a few days. Take a plastic spatula or even an old credit card and it'll get 100% of it off.
Creamy, not crunchy, I presume?
Seriously, would pure peanut oil work even better, then, I'm guessing?
(Glad OP found his answer in WD-40.)